Richmond RTG-95XLN-3

This site calculated the 206 therms figure; the registry does not list it. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for the high draw pattern. For this model the UEF is 0.82, from DOE CCD data retrieved 2026-09-19. The figure holds only at the federal test's daily draw. A household that uses more hot water will use more gas, and one that uses less will use less. Among the 397 models in its class, this unit ranks 229th lowest for energy use. That puts it in the second-highest quarter of its class for energy use. The steps behind this figure are set out in how this site calculates annual energy and cost.

The high draw pattern describes a larger household, or one where showers and laundry overlap. The registry lists a maximum flow rate in gallons per minute of 4.8 for this unit. The data does not show whether that flow covers a given home's peak demand, so this page makes no claim about it. A home that uses less hot water than the test assumes does not meet the condition behind 206 therms. For that home, the yearly figure does not apply as written. The rank compares this unit only with the 397 gas tankless models at the high draw pattern. It does not compare it with tank or electric units. To compare across those groups, use the water heater selector by fuel, space and size.

This text does not give the running cost. The cost depends on your state's average residential gas price, so the page works it out from your ZIP. This model uses 24 therms more gas a year than the class median at the high draw pattern. What that gap costs depends on the same local price. This page shows the modeled installed-cost range in its own block, with its source and date, and it is not a quote. To see the yearly cost at your own rate, enter your ZIP in the water heater cost calculator for your ZIP. To look up other models in the same class as this 182 therms-median group, use the same-class replacement finder by model number.